

510 
“EXPERIMENT Iv. 
40 or 144 = Indigo 
/ 60 . 216. Green 
Shouldcompefez60 —_ Blue. 
eh: ‘See Table B 3. 
EXPERIMENT V. 
60 or 260 ' Blue 
48 160 ~=>© Yellow 
Green. 
Should compofe 360 ae 
ae See Table B 4. 
EXPERIMENT VI. 
60 or 24845 Green - 
27 OF 411 > Orange 

Should compofe 360 Yellow. 
oe See’ Table B 5. 
EXPERIMENT VII. 
43 or 18544 Yellow 
45 174 £8 Red 

Orange. 
See Table B 6. 
EXPERIMENT VIII. 
27 OF 90757 Orange 
1O7F 
$0 269 37 Violet 
Should compofe 360 


Red. . 
See Table B 7. 
From thefe Experiments, B 1, to B 7, 
it appears that a factitious colour, iefem-_ 
bling any colour in the prifni, may be 
produced by the combination of the two 
that are immediately contiguous, in the 
proportion in which they are in the fpec- 
trum. : eo 
ft follows then, that any three following 
colours in the fpecirum when combined, pro- 
duce only the middle colour, becaufe the 
two extremes produce only the interme- 
‘diate colour. j 
EXPERIMENT 1X. 
45 or 9%+<<- Red 
80 174.22 Violet - 
t65 Pe 
40 
Should compofe 360 | 
87 es Indigo 

Violet. 
See Fable Ci. 
EXPERIMENT -X. 
Should compofe 360 
$0 or 160 Violet 
Suu 9) 8o Indigo 
60 120 Blue ~ 
Tadigo 
Sheuld compofe 360 - * 
Experiments of Colours. 
{ Auguft, | 
‘EXPERIMENT XI. 

: 40-0r 90 Indigo 
60 + 335 Blue 
eee L>) 135 Green ~— 
Should compofe 360 Blue. 
See Table C 3. 
EXPERIMENT XII. 
60 or 128 74% Blue 
GE 
| 60 128 90 Green 
44 
43 102 44 -Yellow. 

Green. - 
See Table C 4. 
EXPERIMENT XI. . 
Sheuld compofe 360 

60 or 160 Green 
48 128 Yellow 
27 72 Orange 
Should compofe 360 Yellgw 54. 3 
See Table C a 
EXPERIMENT XIV. 

48 or 144 Yellow | 
27 8x1 Orange 
450 id 35 ee 
Should compofe 369 Orange. 
See Table C.6« 
EXPERIMENT XV. 


27 or 63753 Orange 
45 106 — Red 
Sa '" 785 ae Violet 

Red. 
Seé Table C 7. 
From the. Experiments B 1 to B7, 
which prove that any intermediate faéi- 
ticus prifinatic colour, may be compofed 
of the two immediately contiguous, it fol- 
lows: that if any four folloaving colours in 
the fpectrum be iaken, a tint or jhade inter - 
mediate to the fecond and third colours will 
be produced. For the 1f, agd the 3d, 
produce the 2d, which is infermediate 5 
and the 2d, and 4th, produce the 3d; 
which is intermediate to them; confe~ 
Should compofe 360 
quently the tint, fhade, or colour, pro- 
duced by all the four, will be the fame, 
as would have been produced by combin- 
ing only the 2d, and 3d, or the two anter- 
mediate colours. 
From the Experiments C1 to C7, it 
may be interred, that whife or the fame 
effe& which is produced by the combination 
of the feven colours, will be produced by 
beginning with any colour in the [pectrumy, 
aad combining a quantity of the 2d colour 
equal to the xft, xd, and thitd; vith wm 
giantity of the 5th colour equal to the 4th, 
5/6; and 6th, and by adding to thefe the 7thm 
cutourt 
